Hi,

I am trying to use the Solaris system pppd by opening pseudo terminal pairs. I am getting
following error "tcgetattr: Invalid argument". I am unable to get root cause for it.
I enabled the kdebug flag of pppd. Still there is no enough information.

Here is the program which I am using..

#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <termios.h>
#include <string.h>


int main()
{

int pseduoFd, argsIndex = 0;
char *args[8];
struct termios termInfo;

printf ("\n Test Programe \n");

printf("\n Opening Pseduo-Terminals In Unix System \n");
printf("\n ---------------------------------------- \n");

/* Opening Master Device Files */
pseduoFd = open("/dev/ptmx", O_RDWR|O_NOCTTY);

printf ("\n Pseduo Terminal Device Descriptor : %d", pseduoFd );

/* Grant Access To Slave */
if (grantpt(pseduoFd) < 0) {
close(pseduoFd);
return(-2);
}

/* Clear Slave's Lock Flag */
if (unlockpt(pseduoFd) < 0) {
close(pseduoFd);
return(-3);
}

printf("\n Pseduo Terminal Slave Device Name: %s \n", ptsname(pseduoFd) );


tcgetattr(pseduoFd, &termInfo);

printf("\n Error Number: %d -- %s \n", errno, strerror(errno));



/* Need To Spawn System PPPD */

/* Preparing The Arguments */

args[argsIndex++] = "/usr/bin/pppd";
args[argsIndex++] = ptsname(pseduoFd);
args[argsIndex++] = "-detach";
args[argsIndex++] = "asyncmap";
args[argsIndex++] = "0";
args[argsIndex++] = "logfile";
args[argsIndex++] = "/app2/vskumar/pppd/sun-ppp.log";
args[argsIndex++] = 0;

printf("\n Spwaning New Process: \n" );

int pid = fork();

switch(pid)
{
case 0:
//case of child
if( execv( args[0], args ) == -1 )
{
// perror("Unable to exec child pppd");
printf("Unable to exec child pppd");
exit(-1);
}
return -1;
break;

case -1:
//perror("Could not fork /usr/sbin/pppd");
printf("Could not fork /usr/sbin/pppd");
return -1;
break;

default:

//case of parent;
printf ("\n Parent Process Running \n");

while(1)
{

}

}


return 1;
}


Could you please help me what could be the wrong? I am not getting any problem while opeing the Pseudo Termina pairs...